"It was a disgrace, really. I don't know who the guy's job is to decide that, but he has got to face consequences for it," the New Zealand-born player told Wales Online after the match.

While it may seem like an unfortunate wardrobe malfunction, tournament rules state teams must submit two kit designs to governing body European Professional Club Rugby before the start of competition. Teams are then told which kit they will wear two weeks ahead of a match.

Just a good ol' sea of blue. Image: gettyJust 48 shades of blue short. Image: Getty

In a statement, EPCR said those procedures had not been properly followed ahead of the match in the Welsh capital.

"These procedures were not sufficiently followed through for last weekend's Heineken Champions Cup, Round 2 match at Cardiff Arms Park," the statement said.

"EPCR will be formally contacting both Cardiff Blues and Glasgow Warriors in due course to apologise."